No luck finding a dead firefly yet, so I’m having to rely on whatever resources I can scrape from the internet. Luckily I found this fantastic image of a head. There’s only the one angle, and it’s impossible to see what’s going on behind those tusk-like structures, but it’s enough for a decent model for close-ups. I’ll add more detail with displacement and other maps.
I didn’t know insect mouths were so complex. Click here for an excellent description and interactive guide.